PVC profiles are commonly used to produce doors and windows. These profiles are lightweight but may lack sufficient strength on their own, so steel reinforcement is typically added into the hollow cavities to enhance structural integrity. As a result, doors and windows made from these reinforced profiles are often called "steel-reinforced plastic doors and windows."
Plastic steel doors are primarily manufactured using polyvinyl chloride (PVC), modified PVC, resin, and other key raw materials. According to specific design specifications, galvanized cold-rolled steel is inserted into the hollow cavities of the profiles, adhering to relevant national standards. This lining steel is usually around 1.5mm thick. Special machines are then used for cutting, welding, and assembly. These doors offer the same durability and functionality as aluminum, steel, or wooden doors while providing additional benefits.
One of the standout features of plastic steel doors is their fire-resistant properties. They do not ignite easily, self-extinguish when exposed to flames, and are non-combustible, making them an excellent choice for safety-conscious households. Additionally, their thermal conductivity is far lower than that of wood or metal, resulting in superior insulation compared to aluminum doors.
Another advantage lies in their durability. Plastic steel doors can withstand extreme temperatures ranging from -30°C to -70°C without warping, fading, or becoming brittle. They are also resistant to acidic and alkaline substances, corrosion, and environmental factors such as heavy rain and direct sunlight. Moreover, they remain unaffected by dust, cement, or adhesive chemicals, ensuring long-term reliability.
The design of these doors includes a built-in drainage system, ensuring water does not seep through. The joints are tightly sealed, offering excellent sound insulation—less than 20 UP—and keeping noise levels low. Regular cleaning with mild detergents leaves the surface looking pristine, and with proper maintenance, these doors can last over 30 years.
In household settings, kitchens and bathrooms tend to be humid environments prone to dust accumulation. For such areas, doors must be both fireproof and thermally insulated while remaining waterproof and easy to clean. Plastic steel doors meet all these criteria perfectly, making them ideal choices for kitchen and bathroom doors. Their combination of durability, energy efficiency, and ease of maintenance makes them a practical solution for modern homes.
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